Low carbon self-sufficiency solutions
GENERATE YOUR ELECTRICITY WITH RENEWABLE ENERGIES
Mini Green Power has been a mission company since July 2020 and is part of the mission companies business community.
1. PRODUCTION OF ELECTRICITY FROM PLANT RESIDUES
The biomass technology developed by Mini Green Power makes it possible to produce heat from plant residues. This heat can be valorized directly or in electrical form.
1.1. Technology :Gazeogen©
Gazeogen © is the combination of a Gazeotherm © and a turbine producing electricity.
The energy produced in the Gazeotherm © can be converted into electricity through a Rankine cycle or a steam turbine. Depending on the power of the plant, Mini Green Power uses three types of turbines:
■ ORC turbines low temperatures for electric power between 36 kWe and 200 kWe. The electrical yields are relatively low (5% to 13%), but the overall efficiency (electrical and heat) can reach 80%, when the heat is recovered.
■ High-temperature ORC turbines for powers between 200 kWe and 1 MWe. The electrical yields are between 15 and 19%. The overall efficiency of the installation can reach 80%, when the heat is recovered.
■ Steam turbines for electric power between 700 kWe and 1.3 MWe. This technology makes it possible to achieve yields greater than 20%.
Since May 2018, Mini Green Power has been the French representative of the ORC Low-Temperature brand ElectraTherm© , which has a fleet of more than 100 installations worldwide, totaling more than one million hours of operation.
1.2. Production models
The economic model is based on the selling price of electricity, the price of heat and the cost of fuel. The Mini Green Power solution accepts a wide range of biomass, with a cost that is often very low, which gives a significant advantage.
Depending on the country of installation, three types of economic models are possible:
■ Total self-consumption to gain autonomy and reduce its energy bill,
■ The total resale of the electricity produced on the network,
■ Surplus resale contracts.
In France, the resale of electricity is often based on subsidized rates:
■ Total resale of electricity produced: rates are set by calls for tenders from the Energy Regulation Commission (CRE). To access these rates, the heat of cogeneration must be valued.
■ Self-consumption with CRE contracts: in this case, heat recovery is not imposed by the CRE, but it improves the economic model and contributes to the efficiency of the project.
■ Surplus resale contracts: the electrical energy produced primarily serves the needs of the customer on site, the surplus is resold to the network.
Abroad, the cases depend on one site to another, but the economic model is based on the same fundamentals: selling price of electricity, heat recovery and purchase price of the fuel.
Benefits of Biomass Power Generation by Gazéogen ©
■ Non-intermittent energy compatible with continuous consumption profiles,
■ Reduce the cost of inputs with the acceptance of a broad spectrum of biomass,
■ Low pollutant emissions.
3. Modular solutions for off-grid and remote areas
Mini Green Power customizes islanding solutions to allow companies, organizations and communities to produce electricity in off-grid and remote areas. The solution includes:
■ Energy storage system that integrates a grid-forming inverter & Lithium-Ion battery pack to allow off-grid electricity production.
■ Smart distribution system that allows to produce electricity with multiple energy resources simultaneously (biomass, solar, hydro, diesel, etc.).
■ Highly scalable containerized solutions that can be adapted to different environment and energy needs, from small villages to industrial buildings.
■ Modern control system to ensure stability between production and consumption. The Power management System (PMS) ensures microgrid stability, while the Energy Management System (EMS) optimizes the production and the consumption according to predefined parameters (weather, price of electricity, fuel availability, etc.
3.2. Production models
■ Power Purchase Agreement (PPA) can be signed between the power producer (owner of the installation) and the consumer (communities, commercials & industrials, hotels, etc.). The electricity is sold to the consumer at a defined price for the duration of the contract.
■ Self-consumption of the energy produced by the installation to improve carbon footprint and reach energy independence.
■ Integration into existing units. Mini Green Power can add biomass power plant, solar farm, diesel generator and energy storage to existing units which require to increase power production.